1、BSI Standards PublicationBS EN ISO 283:2015Textile conveyor belts Fullthickness tensile strength,elongation at break andelongation at the referenceload Test methodBS EN ISO 283:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 283:2015.It supersedes BS EN
2、 ISO 283:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/67, Conveyor belts.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovision
3、s of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 86176 5ICS 53.040.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published unde
4、r the authority of theStandards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 283 November 2015 ICS 53.040.20 Supersedes EN ISO 283:2007English Version Textile conve
5、yor belts - Full thickness tensile strength, elongation at break and elongation at the reference load - Test method (ISO 283:2015) Courroies transporteuses carcasse textile - Rsistance la traction, allongement la rupture et allongement sous force de rfrence en pleine paisseur - Mthode dessai (ISO 28
6、3:2015) Textilfrdergurte - Zugfestigkeit bei voller Gurtdicke, Bruchdehnung und Dehnung bei breitenbezogener Bruchkraft - Prfverfahren (ISO 283:2015) This European Standard was approved by CEN on 24 October 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipula
7、te the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Sta
8、ndard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the na
9、tional standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, S
10、lovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by any me
11、ans reserved worldwide for CEN national Members. Ref. No. EN ISO 283:2015 EBS EN ISO 283:2015EN ISO 283:2015 (E) 3 European foreword This document (EN ISO 283:2015) has been prepared by Technical Committee ISO/TC 41 “Pulleys and belts (including veebelts)” in collaboration with Technical Committee C
12、EN/TC 188 “Conveyor belts” the secretariat of which is held by SNV. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2016, and conflicting national standards shall be withdrawn at the latest by
13、 May 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 283:2007. According to the CEN-CENELEC Inte
14、rnal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, I
15、reland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 283:2015 has been approved by CEN as EN ISO 283:2015 without any modification. BS EN
16、ISO 283:2015ISO 283:2015(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Principle 25 Apparatus . 26 Test pieces . 36.1 Shape and dimensions 36.2 Method of selection of test pieces 36.3 Preparation of test pieces 66.4 Number of test pieces . 66.5 Conditioning of test pie
17、ces . 67 Procedure. 68 Calculation and expression of results . 68.1 Tensile strength 68.2 Elongation . 78.2.1 Elongation at break 78.2.2 Elongation at reference force (see 3.5) . 79 Test report . 7Bibliography 9 ISO 2015 All rights reserved iiiContents PageBS EN ISO 283:2015ISO 283:2015(E)ForewordIS
18、O (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical co
19、mmittee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electro
20、technical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was draf
21、ted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rig
22、hts. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constit
23、ute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.The comm
24、ittee responsible for this document is ISO/TC 41, Pulleys and belts (including veebelts), Subcommittee SC 3, Conveyor belts.This fourth edition cancels and replaces the third edition (ISO 283:2007), which has been technically revised.iv ISO 2015 All rights reservedBS EN ISO 283:2015INTERNATIONAL STA
25、NDARD ISO 283:2015(E)Textile conveyor belts Full thickness tensile strength, elongation at break and elongation at the reference load Test method1 ScopeThis International Standard specifies a test method for the determination of the full thickness tensile strength in the longitudinal direction and t
26、he elongation at the reference force and breaking point of conveyor belts having a textile carcass. The method can also be used for the determination of full thickness tensile strength in the transverse direction and the elongation at the breaking point, for use when the manufacturer is requested by
27、 the purchaser to state values for these properties.This International Standard is not suitable or valid for light conveyor belts as described in ISO 21183-1.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its
28、application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 75001, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Veri
29、fication and calibration of the force-measuring systemISO 18573, Conveyor belts Test atmospheres and conditioning periods3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1tensile strengthgreatest measured force during the tensile test divided by t
30、he width of the test pieceNote 1 to entry: It is expressed in N/mm.3.2nominal tensile strengthspecified minimum value of the tensile strengthNote 1 to entry: It is expressed in N/mm.3.3reference forcereference loadone-tenth of the nominal tensile strength in the longitudinal direction multiplied by
31、the width of the test piece in mmEXAMPLE Nominal tensile strength = 1 600 N/mm; one tenth of the nominal tensile strength = 160 N/mm; reference force for 25 mm test piece = 25 mm 160 N/mm = 4 000 N.Note 1 to entry: It is expressed in N/mm. ISO 2015 All rights reserved 1BS EN ISO 283:2015ISO 283:2015
32、(E)3.4elongation at breakelongation at the greatest force (load)Note 1 to entry: It is expressed as the percentage increase in the distance between two reference points.3.5elongation at the reference force (load)elongation at the reference force (load) in the longitudinal directionNote 1 to entry: I
33、t is expressed as the percentage increase in the distance between two reference points.4 PrincipleA test piece, cut from the full thickness of the conveyor belt, is extended under specified conditions using a tensile testing machine, until rupture of the test piece occurs.5 Apparatus5.1 Tensile test
34、ing machine, of CRE or CRT type, calibrated to Grade 1 according to ISO 7500-1 and capable of extending the test piece at a constant rate, without interruption, of (100 10) mm/min.5.2 Device, such as an extensometer, with a measuring length of at least 100 mm and accurate to within 0,1 mm or better,
35、 capable of measuring the elongation of the gauge length marked on the test piece. Use of a device that produces a graphical trace throughout the test is preferred.5.3 Grips, the form of which should prevent any slippage of the test piece during the tensile test. The use of grips with transverse ser
36、rations in accordance with Figure 1 is recommended.Dimensions in millimetres3050Figure 1 Grip with transverse serrations5.4 Die cutter or power saw, either of the dies with wall profiles as shown in Figure 2 being suitable for cutting the test pieces shown in Figure 3, Figure 4, and Figure 5. Other
37、profiles may be used, but the critical feature is that the cut sides of the test piece are perpendicular to the test piece surfaces.2 ISO 2015 All rights reservedBS EN ISO 283:2015ISO 283:2015(E)6 Test pieces6.1 Shape and dimensionsThe shape and dimensions of the test piece shall be in accordance wi
38、th Figure 3, Figure 4, Figure 5, or Figure 6.6.2 Method of selection of test piecesTest pieces shall be selected parallel, or at right angles, to the axis of the belt, and at not less than 50 mm from the edge of the belt. If test pieces are selected from a sample cut from the belt, no test piece sha
39、ll be cut with its longitudinal edge less than 12 mm from the edge of the sample. In all cases, the cut or sawn sides of the test piece shall be perpendicular to its surface. No test piece shall contain a ply joint.For a test piece of type D, draw the form of the test piece on the surface of the bel
40、t or sample and from each edge of the sample, cut at five places with a power saw up to the drawn lines (see Figure 6).The type D test piece illustrated in Figure 6 should be limited to the testing of conveyor belts having tensile strengths greater than 2 000 N/mm.Dimensions in millimetres18a)5511=b
41、)Figure 2 Suitable die profiles ISO 2015 All rights reserved 3BS EN ISO 283:2015ISO 283:2015(E)Dimensions in millimetres100(220 10) + L351R1 000+1-225KeyL length of both grips1 reference linesFigure 3 Type A test pieceDimensions in millimetres+1-225100(415 10) + L100R5601KeyL length of both grips1 r
42、eference linesFigure 4 Type B test piece4 ISO 2015 All rights reservedBS EN ISO 283:2015ISO 283:2015(E)Dimensions in millimetres+1-225100(240 10) + L63R3501KeyL length of both grips1 reference linesFigure 5 Type C test pieceDimensions in millimetres(415 10) + L100 150 125 11,5 0,5R560 112+1-225100Ke
43、yL length of both grips1 reference lines2 cutting points across the warpFigure 6 Type D test piece ISO 2015 All rights reserved 5BS EN ISO 283:2015ISO 283:2015(E)6.3 Preparation of test piecesAcross the longitudinal axis of the test piece and at right angles to it, draw reference lines 100 mm apart
44、and equidistant from the centre of the test piece (see Figure 3, Figure 4, Figure 5, and Figure 6).Measure the width of the test piece at the centre of the middle section, i.e. between the reference lines, using a vernier gauge capable of reading to at least 0,1 mm.If the covers of the belt are very
45、 thick or of very different thicknesses, the test may be performed without covers or with reduced covers, to avoid slippage of the test piece in the grips.For certain types of belt construction, the shapes of the test pieces illustrated in Figure 3, Figure 4, Figure 5, and Figure 6 produce abnormal
46、and unequal stress distributions in the threads of the carcass, causing systematic slip in the grips and giving misleading results. Under such circumstances, the test may be conducted using test pieces of a different shape.6.4 Number of test piecesThree test pieces shall be selected from the longitu
47、dinal direction of the belt and, if appropriate, three shall be selected from the transverse direction of the belt.6.5 Conditioning of test piecesCondition the test pieces in accordance with ISO 18573, using atmosphere A, B, or C, and carry out the tests immediately after completion of the condition
48、ing period.7 ProcedureMount the test piece symmetrically between the grips of the tensile testing machine, so that the longitudinal axis of the test piece, the centre-line of the grips, and the line of action of the pulling force are coincident. If using an extensometer, fasten the extensometer to t
49、he test piece on the reference lines.The distance between the inside faces of the grips at the commencement of the test shall be the following:a) for type A test pieces, (220 10) mm;b) for both types B and D test pieces, (415 10) mm;c) for type C test pieces, (240 10) mm.If a preload is applied to the test piece at the start of the test, this shall not exceed 0,5 % of the nominal tensile strength.Start the machine and extend the test piece at a constant, uninterrupted speed of (100 10) mm/mi
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